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Ricardo A. Lebensohn

Ricardo Lebensohn

Email
Phone (505) 665-3035

Capabilities

  • Computational Physics and Applied Mathematics
  • Numerical modeling
  • Coupled multi-physics simulations
  • Algorithms
  • Computational Co-Design
  • Applied Math
  • Materials
  • Materials by design
  • Materials behavior in extreme environments,
  • Dynamic loading
  • Mechanical forming and machining
  • Development of constitutive properties of structural materials
  • Plasticity theory
  • Materials and process simulation
  • Statistical mechanics properties of materials
  • Microscopic, mesoscopic and continuum level mechanical behavior
  • Exascale Co-Design Center for Materials in Extreme Environments (ExMatEx)
  • Neutron Diffraction
  • Materials Texture
  • In-situ Load-Stress/Strain neutron Characterization
  • In-situ Load-Stress/Strain X-ray Characterization

Expertise

Ricardo Lebensohn is an expert in structure/property relationship of materials and crystal plasticity modelling. His pioneer contributions include the main-field viscoplastic selfconsistent (VPSC) formulation and associated code, a homogenization-based simulation tool for the prediction of mechanical response and microstructure evolution of polycrystalline metals, minerals and polymers. He also developed the specialization to polycrystals of the full-field Fast Fourier Transform (FFT)-based formulation and associated codes. FFT-based formulations are ideally suited for micromechanical simulations with direct input from microstructural images, e.g. collected by emerging 3-D characterization methods in Experimental Mechanics.

Dr. Lebensohn has extensive experience in the following fields, applications and techniques: Mechanics of Materials, Computational Mechanics; Solid Mechanics; Micromechanics; Polycrystal Plasticity; Dilatational Plasticity; Strain-Gradient Plasticity; Homogenization; Spectral Methods; Multiscale Material Modelling; Texture, Anisotropy, Microstructure and Damage Evolution of Metals, Minerals and Polymers; X-Ray and Neutron Diffraction; Residual Stresses; Finite Element Analysis; Metal Forming; Dynamic Properties of Materials.

Education

1994: Postdoc, Laboratoire Génie Physique et Mécanique de Matériaux (GPM2), Grenoble, France.

1989 - 1993: PhD in Physics, Facultad de Ciencias Exactas, Ingeniería y Agrimensura, Universidad Nacional de Rosario, Argentina.

1982 - 1988: BSc/MSc in Physics, UNR, Rosario, Argentina.

 

LANL Positions

Since 2018: Scientist 5, Fluid Dynamics and Solid Mechanics, T-3 Group, Theoretical Division.

Since 2018: Project Leader of LANL’s Computational Mechanics of Materials (TCG-I), DOE-DoD Joint Munitions Program (JMP).

Since 2018: Task 2.4 Leader “Constitutive Modelling and Homogenization”, Extreme Enviroment Materials (XMat) Program, Office of Fossil Energy, DOE.

2017 - 2020: Principal Investigator (PI) of LANL’s Laboratory-Directed Research and Development-Exploratory Research (LDRD-ER) project: “Methods and algorithms to account for field fluctuations obtained by homogenization in solid mechanics, and Co-PI of LDRD-ER project: “Next-Generation Discrete Dislocation Dynamics modelling for Materials Science applications”.

2013 - 2017: Team Leader. Mechanical Modeling Team, Materials Science in Radiation and Dynamics Extremes (MST-8) Group, Materials Science and Technology Division.

2013-2016: PI of LDRD-Directed Research (LDRD-DR): “Mesoscale materials science of ductile damage in four dimensions: towards the computational design of damage-tolerant materials”.

2011 - 2017: Scientist 4, MST-8 Group.

2006 - 2011: Scientist 3, MST-8 Group.

2003 - 2006: Technical Staff Member, MST-8 Group.

2001: Long-Term Visiting Staff Member, MST-8 Group.

Previous Academic and Scientific Positions

1999-2000: Provost for Science and Technology, Universidad Nacional de Rosario (UNR), Argentina.

1997-2003: Researcher of CONICET (National Research Council), Instituto de Física Rosario (IFIR, Rosario Physics Institute), Rosario, Argentina.

1995-2003: Professor, Physics Department, UNR.

1995-2003: Researcher of UNR’s Research Council at IFIR.

1988-1993: Teaching Assistant at UNR.

Visiting Positions

For periods between 1 and 6 months:

2017: Danish Technical University, Lyngby, Denmark (Otto Mønsted Visiting Professor).

2013: Université de Lorraine, Metz, France.

2012: Fraunhofer-Institut für Werkstoffmechanik, Freiburg, Germany.

2011, 2007: Laboratoire de Mécanique et d'Acoustique, Marseille, France.

2010: Max-Planck-Institut für Eisenforschung, Düsseldorf, Germany (Humboldt Awardee).

2008: Université de Aix-Marseille III, Marseille, France.

2008: Instituto Madrileño de Estudios Avanzados (IMDEA-Materiales), Madrid, Spain.

2006, 2002: Université Paris-Nord, Villetaneuse, France.

2005: Ecole Polytechnique, Palaiseau, France.

2000, 1998: Los Alamos National Laboratory, Los Alamos, USA.

2000, 1999: Centre de Mise en Forme (CEMEF), Sophia-Antipolis, France

1999: Department of Mechanical & Aerospace Engineering, Cornell University, Ithaca, USA.

1998, 1996, 1995: Technische Universitat Hamburg-Harburg, Hamburg, Germany.

1997: Department of Geology and Geophysics, University of California, Berkeley, USA (Fulbright Scholar).

1995, 1994: RISØ National Laboratory, Roskilde, Denmark.

 

 

Awards

2019: The Minerals, Metals & Materials Society (TMS) Structural Materials Division (SMD) Distinguished Scientist/Engineer Award, for “long lasting contribution to the fundamental understanding of microstructure, properties and performance of structural materials for industrial applications”.

2016: Otto Mønsted Visiting Professorship at the Danish Technical University (DTU), Otto Mønsted Foundation, Denmark.

2011: Defense Programs Award of Excellence, National Nuclear Security Administration (NNSA), USA, as part of the Process Engineering and Design for Improved Component Testing (PREDICT) team, “in recognition of significant achievements in quality, productivity, cost savings, safety, or creativity in support of NNSA’s programs”.

2010: Humboldt Research Award for Senior US Scientists, Humboldt Foundation, Germany, in recognition to scholars whose fundamental discoveries, new theories, or insights have had a significant impact on their own discipline”. In the case of Dr. Lebensohn: “for pioneering work in the field of multiscale modelling of plasticity of crystalline materials”.

1997: Fulbright Scholarship Award. Department of Geology and Geophysics, University of California, Berkeley, USA.

 

 

Publications

Bibliometric Indicators (December 2018)

Web of Science/ResearcherID (see researcherid.com/rid/A-2494-2008): 6000+ citations, h-index=40. Papers contributing to this h-index, with # of citations, are indicated in the full list of peer-reviewed articles given below.

Google Scholar (see http://scholar.google.com/citations?user=eLtHiCwAAAAJ): 8600+ citations, h-index=50.

One of our papers (R.A. Lebensohn and C.N. Tomé, Acta Metall. Mater. 41, 2611, 1993) is top-20 most-cited article (1200+ in Web of Science, 1600+ in Google Scholar) in Acta Materialia (impact factor 5.301) since the journal’s inception in 1953.

5 highly-cited recent papers according to Essential Science Indicators, indicated in the full list of peer-reviewed articles given below.

Top articles in Scopus citation benchmarking, compared to articles of same discipline, age and type: top 1%: 4 papers, top 2%: 7 papers, indicated in the full list of peer-reviewed articles given below.

Coauthor of 3 out of 10 most-cited papers in International Journal Plasticity (impact factor 5.702) in the 5-year period 2012-2017.

Articles in Peer-Reviewed International Journals

134. M. Zecevic, R.A. Lebensohn, R.J. McCabe and M. Knezevic: “Modelling recrystallization textures driven by intragranular fluctuations implemented in the viscoplastic self-consistent formulation”, Acta Materialia 164 pp. 530-546 (2019).

133. J. Segurado, R.A. Lebensohn and J. Llorca: “Computational homogenization of polycrystals”, Advances in Applied Mechanics 51, pp. 1-114 (2018).

132. A. Eghtesad, T. Barrett, K. Germaschewski, R.A. Lebensohn, R.J. McCabe and M. Knezevic: “OpenMP and MPI implementations of an elasto-viscoplastic fast Fourier transform-based micromechanical solver for fast crystal plasticity modeling”, Advances in Engineering Software 126, pp. 48-60 (2018).

131. J. Nagra, A. Brahme, R. Mishra, R.A. Lebensohn and K. Inal: “An efficient full-field crystal plasticity-based M-K framework to study the effect of 3D microstructural features on the formability of polycrystalline materials”, Modelling and Simulation in Materials Science and Engineering 26, 075002 (24pp) (2018).

130. M. Zecevic, R.A. Lebensohn, R.J. McCabe and M. Knezevic: “Modeling of intragranular misorientation and grain fragmentation in polycrystalline materials using the viscoplastic self-consistent formulation”, International Journal of Plasticity, 109, pp. 193-211 (2018).

129. M.V. Upadhyay, A. Patra, W. Wen, T. Panzner, S. Van Petegem, C.N. Tomé, R.A. Lebensohn and H. Van Swygenhoven: “Mechanical response of stainless steel subjected to biaxial load path changes: cruciform experiments and multi-scale modeling”, International Journal of Plasticity 108, pp. 144-168 (2018).

128. B. Feng, C.A. Bronkhorst, F.L. Addessio, B. Morrow, E.K. Cerreta, T. Lookman, R.A. Lebensohn and T. Low: “Coupled nonlinear elasticity, plastic slip, and twinning in single crystal titanium loaded by split-Hopkinson pressure bar”, Journal of the Mechanics and Physics of Solids 119, pp. 274-297 (2018).

127. V. Tari, R.A. Lebensohn, R. Pokharel, T.J. Turner, P.A. Shade, J. Bernier, A.D. Rollett: “Validation of micromechanical FFT-based simulation with High Energy Diffraction Microscopy (HEDM) on Ti-7Al”, Acta Materialia 154, pp. 273-283 (2018).

126. A. Rovinelli, M.D. Sangid, H. Proudhon, Y. Guilhem, R.A. Lebensohn and W. Ludwig: “Predicting the 3-D fatigue crack growth rate of short cracks using multimodal data via Bayesian network: in-situ experiments and crystal plasticity simulations”, Journal of the Mechanics and Physics of Solids 115, pp. 208-229 (2018).

125. A. Eghtesad, M. Zecevic, R.A. Lebensohn, R.J. McCabe and M. Knezevic: “Spectral database constitutive representation within a spectral micromechanical solver for computationally efficient polycrystal plasticity modelling”. Computational Mechanics 61, pp. 89-104 (2018).

124. E. Gomez-Rivas, A. Griera, M.G. Llorens, P.D. Bons, R.A. Lebensohn and S. Piazolo: “Subgrain rotation recrystallization during shearing: insights from full-field numerical simulations of halite polycrystals”. Journal of Geophysical Research: Solid Earth 122, pp. 8810-8827 (2017).

123. D. Tourret, J.C.E. Mertens, E. Lieberman, S.D. Imhoff, J.W. Gibbs, K. Henderson, K. Fezzaa, A.L. Deriy, T. Sun, R.A. Lebensohn, B.M. Patterson and A.J. Clarke: “From solidification processing to microstructure to mechanical properties: A multi-scale X-ray study of an Al-12at.%Cu alloy sample”, Metallurgical and Materials Transactions 48A, pp. 5529-5546 (2017).

122. C. Garcia-Cardona, R.A. Lebensohn and M. Anghel: “Parameter estimation in a thermoelastic composite problem via adjoint formulation and model reduction”, International Journal of Numerical Methods in Engineering 112, pp. 578-600 (2017).

121. M. Arul Kumar, I.J. Beyerlein, R.A. Lebensohn and C.N. Tomé: “Role of alloying elements on twin growth and twin transmission in magnesium alloys”, Materials Science and Engineering A 706, pp. 295-303 (2017).

120. J. Nagra, A. Brahme, R.A. Lebensohn and K. Inal: “Efficient fast Fourier transform-based numerical implementation to simulate large strain behavior of polycrystalline materials”, International Journal of Plasticity 98, pp. 65-82 (2017).

119. M. Zecevic, W. Pantleon, R.A. Lebensohn, R.J. McCabe and M. Knezevic: “Predicting intragranular misorientation distributions in polycrystalline metals using the viscoplastic self-consistent formulation”, Acta Materialia 140, pp. 398-410 (2017).

118. M. Arul Kumar, I.J. Beyerlein, R.A. Lebensohn, C.N. Tomé: “Modeling the effect of neighboring grains on twin growth in HCP polycrystals”, Modelling and Simulation in Materials Science and Engineering 25, 064007 (25pp) (2017).

117. A. Rovinelli, Y. Guilhem, H. Proudhon, R.A. Lebensohn, W. Ludwig and M.D. Sangid: “Assessing reliability of fatigue indicator parameters for small crack growth via a probabilistic framework”. Modelling and Simulation in Materials Science and Engineering 25, 045010 (29pp) (2017).

116. M.V. Upadhyay, J. Capek, S. Van Petegem, R.A. Lebensohn and H. Van Swygenhoven: “Intergranular strain evolution during biaxial loading: a multiscale FE-FFT approach”. Journal of the Minerals, Metals and Materials Society (JOM) 69, pp. 839-847 (2017).

115. R. Pokharel and R.A. Lebensohn: “Instantiation of crystal plasticity simulations for micromechanical modelling with direct input from microstructural data collected at light sources”. Scripta Materialia 132, pp. 73-77 (2017).

114. M.-G. Llorens, A. Griera, F. Steinbach, P.D. Bons, E. Gomez-Rivas, D. Jensen, J. Roessiger, R.A. Lebensohn and I. Weikusat: “Dynamic recrystallisation during deformation of polycrystalline ice: insights from numerical simulations”. Philosophical Transactions of the Royal Society A 375, 20150346 (2017).

113. C.F. Chen, R. Pokharel, M.J. Brand, E.L. Tegtmeier, B. Clausen, D.E. Dombrowski, T.L. Ickes and R.A. Lebensohn: “Processing and Consolidation of Copper/Tungsten”. Journal of Materials Science 52, pp. 1172-1182 (2017).

112. R.A. Lebensohn and A. Needleman: “Numerical implementation of non-local polycrystal plasticity using Fast Fourier Transforms”. Journal of the Mechanics and Physics of Solids 97, pp. 333-351 (2016).

111. P. Kaercher, L. Miyagi, W. Kanitpanyacharoen, E. Zepeda-Alarcon, Y. Wang, D. Parkinson, R.A. Lebensohn, F. De Carlo and H.R. Wenk: “Two-phase deformation of lower mantle mineral analogs”. Earth and Planetary Science Letters 456, pp. 134-145 (2016).

110. M.V. Upadhyay, S. Van Petegem, T. Panzner, R.A. Lebensohn and H. Van Swygenhoven: “Study of lattice strain evolution during biaxial deformation of stainless steel using a finite element and fast Fourier transform based multiscale approach”. Acta Materialia 118, pp. 28-43 (2016).

109. M.-G. Llorens, A. Griera, P.D. Bons, R.A. Lebensohn, L. Evans, D. Jensen and I. Weikusat: “Full-field predictions of ice dynamic recrystallisation under simple shear conditions”. Earth and Planetary Science Letters 450, pp. 233-242 (2016).

108. E. Lieberman, R.A. Lebensohn, D.B. Menasche, C.A. Bronkhorst and A.D. Rollett: “Microstructural effects on damage evolution in shocked copper polycrystals”. Acta Materialia 116, pp. 270-280 (2016).

107. M.V. Upadhyay, L. Capolungo, V. Taupin, C. Fressengeas and R.A. Lebensohn: “A higher order elasto-viscoplastic model using fast Fourier transforms: effects of lattice curvatures on mechanical response of nanocrystalline metals”. International Journal of Plasticity 83, pp. 126-152 (2016).

106. M. Knezevic, M. Zecevic, I.J. Beyerlein and R.A. Lebensohn: “A numerical procedure enabling accurate descriptions of strain rate-sensitive flow of polycrystals within crystal visco-plasticity theory”. Computer Methods in Applied Mechanics and Engineering 308, pp. 468-482 (2016).

105. M.-G. Llorens, A. Griera, P.D. Bons, J. Roessiger, R. Lebensohn, L. Evans and I. Weikusat: “Dynamic recrystallization of ice aggregates during co-axial viscoplastic deformation: a numerical approach”. Journal of Glaciology 62, pp. 359-377 (2016).

104. B.M. Morrow, R.A Lebensohn, D.T. Martinez, C.P. Trujillo, F.L. Addessio, C.A. Bronkhorst, T. Lookman and E.K. Cerreta: “Characterization and modelling of mechanical behavior of single crystal titanium deformed by split Hopkinson pressure bar”, International Journal of Plasticity 82, pp. 225-240 (2016).

103. G. Stevens, S. Atamturktur, R.A. Lebensohn and G. Kaschner: “Experiment-based validation and uncertainty quantification of coupled multi-scale plasticity models”. Multidiscipline Modeling in Materials and Structures 12, pp. 151-176 (2016).

102. A.W. Mello, A. Nicolas, R.A. Lebensohn and M.D. Sangid: “Microstructure based strain localization within a 7050 Aluminum alloy: comparison of experiments and modeling in various textures”. Materials Science and Engineering A 661, pp. 187-197 (2016).

101. R.A. Lebensohn, M. Zecevic, M. Knezevic and R.J. McCabe: “Average intragranular misorientation trends in polycrystalline materials predicted by a viscoplastic self-consistent approach”, Acta Materialia 104, pp. 228-236 (2016).

100. T. Ozturk, C. Stein, R. Pokharel, C. Hefferan, H. Tucker, S. Jha, R. John, R.A. Lebensohn, P. Kenesei, R.M. Suter and A.D. Rollett: “Simulation domain size requirements for elastic response of 3-D polycrystalline materials”. Modelling and Simulation in Materials Science and Engineering 24, 015006 (13pp) (2016).

99. C.W. Sinclair, G. Martin and R.A. Lebensohn: “Factors contributing to plastic strain amplification in slip-dominated deformation of magnesium alloys”. Modelling and Simulation in Materials Science and Engineering 23, 085002 (17pp) (2015).

98. A. Rovinelli, R.A. Lebensohn and M.D. Sangid: “Influence of microstructure variability on short crack behavior through postulated micromechanical short crack driving force metrics”. Engineering Fracture Mechanics 138, pp. 265-288 (2015).

97. E. Lieberman, A.D. Rollett, R.A. Lebensohn and E.M. Kober: “Calculation of grain boundary normals directly from 3-D microstructure images”. Modelling and Simulation in Materials Science and Engineering 23, 035005 (18pp) (2015).

96. S. Atamturktur, J. Hegenderfer, B. Williams, M. Egeberg, R.A. Lebensohn and C. Unal: “A resource allocation framework for experiment-based validation of numerical models”. Mechanics of Advanced Materials and Structures 22, 641-654 (2015).

95. A. Prakash, W. Nohring, R.A. Lebensohn, H.W. Hoppel and E. Bitzek: “Finite element simulation of the accumulative roll bonding process using an embedded texture model”. Materials Science and Engineering A 631, pp. 104-119 (2015).

94. N. Chandola, R.A. Lebensohn, B. Revil-Baudard, O. Cazacu, R.K. Mishra and F. Barlat: “Combined effects of anisotropy and tension-compression asymmetry on the torsional response of AZ31 Mg”. International Journal of Solids and Structures 58, pp. 190-200 (2015).

93. L. Chen, J. Chen, R.A. Lebensohn, Y.Z. Ji, T. W. Heo, S. Bhattacharyya, K. Chang, S. Mathaudhu, Z.K. Liu and L.Q. Chen: “An integrated fast Fourier transform-based phase-field and crystal plasticity approach to model recrystallization of three dimensional polycrystals”. Computer Methods in Applied Mechanics and Engineering 285, pp. 829-848 (2015).

92. M. Arul Kumar, A.K. Kanjarla, S. Niezgoda, R.A. Lebensohn and C.N. Tomé: “Numerical study of the stress state of a deformation twin in magnesium”, Acta Materialia 84, pp. 349-358 (2015). 70 citations in Web of Science (WoS), top %1 in Scopus.

91. R. Pokharel, J. Lind, S.F. Li, P. Kenesei, R.A. Lebensohn, R.M. Suter and A.D. Rollett: “In-situ observation of bulk 3-D microstructure evolution of polycrystalline Cu using synchrotron radiation”. International Journal of Plasticity 67, pp. 217-234 (2015).

90. N.R. Barton, J.V. Bernier, R.A. Lebensohn and D.E. Boyce: “The use of discrete harmonics in direct multi-scale embedding of polycrystal plasticity”. Computer Methods in Applied Mechanics and Engineering 283, 224-242 (2015).

89. R. Vasin, R.A. Lebensohn, S. Matthies, C.N. Tomé and H.R. Wenk: “The influence of grain shape and volume fraction of sheet silicates: biotite platelets in an isotropic matrix”. Geophysics 79, pp. D433–D441 (2014).

88. J.P. Escobedo, E.K. Cerreta, D.T. Martinez, C.P. Trujillo, R.A. Lebensohn and G.T. Gray III: "Influence of temperature on the dynamic tensile behavior of zirconium". Metallurgical and Materials Transactions A 45, pp. 5877-5882 (2014).

87. J. Galán, P. Verleysen and R.A. Lebensohn: “An improved algorithm for the polycrystal viscoplastic self-consistent model and its integration with implicit finite element schemes”. Modelling and Simulation in Materials Science and Engineering 22, 055023 (18pp) (2014).

86. P. Madrid, D. Sulsky and R.A. Lebensohn: "Uncertainty quantification in prediction of the in-plane Young’s modulus of thin films with fiber texture". Journal of Microelectromechanical Systems 23, pp. 380-390 (2014).

85. G. Martin, C.W. Sinclair and R.A. Lebensohn: “Microscale plastic strain heterogeneity in slip dominated deformation of of a magnesium alloy containing rare-earth”. Materials Science and Engineering A 603 pp. 37-51 (2014).

84. B.S. Anglin, R.A. Lebensohn and A.D. Rollett: “Validation of a numerical method based on fast Fourier transforms for heterogeneous thermoelastic materials by comparison with analytical solutions”. Computational Materials Science, 87, pp. 209-217 (2014).

83. R. Pokharel, J. Lind, A.K Kanjarla, R.A. Lebensohn, S.F. Li, P. Kenesei, R.M. Suter and A.D. Rollett: “Polycrystal plasticity: comparison between grain scale observations of deformation and simulations”. Annual Review of Condensed Matter Physics 5, pp. 317-346 (2014). 58 citations in WoS.

82. R.A. Lebensohn and R. Pokharel: “Interpretation of microstructural effects on porosity evolution using a combined dilatational/crystal plasticity computational approach”. Journal of the Minerals, Metals and Materials Society (JOM) 66, pp. 437-443 (2014).

81. M. Montagnat, O. Castelnau, P. Bons, S. Faria, O. Gagliardini, F. Gillet-Chaulet, F. Grennerat, A. Griera, R.A. Lebensohn, H. Moulinec, J. Roessiger and P. Suquet: "Multiscale modeling of ice deformation behavior". Journal of Structural Geology 61, pp. 78-108 (2014).

80. R.A. Lebensohn, J.P. Escobedo, E.K. Cerreta, D. Dennis-Koller, C.A. Bronkhorst and J. Bingert: "Modelling void growth in polycrystalline materials". Acta Materialia 61, pp. 6918-6932 (2013).

79. O. Cazacu, B. Revil-Baudard, R.A. Lebensohn and M. Garajeu: "On the combined effect of pressure and third invariant on yielding of porous solids with von Mises matrix". Journal of Applied Mechanics 80, 064501 (2013).

78. M. Knezevic, R.J. McCabe, R.A. Lebensohn, C.N. Tomé, C. Liu and B. Mihaila: “Integration of self-consistent polycrystal plasticity with dislocation density based hardening laws within an implicit finite element framework: application to low-symmetry metals”. Journal of the Mechanics and Physics of Solids 61, pp. 2034-2046 (2013). 78 citations in WoS, highly cited paper in Essential Science Indicators (ESI), top 2% in Scopus.

77. A.W. Richards, R.A. Lebensohn and K. Bhattacharya: “Interplay of martensitic phase transformation and plastic slip in polycrystals”. Acta Materialia 61, pp. 4384-4397 (2013).

76. P. Eisenlohr, M. Diehl, R.A. Lebensohn and F. Roters: “A spectral method solution to crystal elasto-viscoplasticity at finite strains”. International Journal of Plasticity 46, pp. 37-53 (2013). 104 citations in WoS, highly cited paper in ESI, top 1% in Scopus.

75. A. Griera, M.G. Llorens, E. Gomez-Rivas, P.D. Bons, M.W. Jessell, L.A. Evans and R. Lebensohn: “Numerical modelling of porphyroclast and porphyroblast rotation in anisotropic rocks”. Tectonophysics 587, pp. 4-29 (2013).

74. R.I. Barabash, A.D. Rollett, R.A. Lebensohn, O.M. Barabash and J.W.L. Pang: "Twin boundary-induced intrinsic strengthening in nickel". Thin Solid Films 530, pp. 14-19 (2013).

73. M. Knezevic, R.J. McCabe, C.N. Tomé, R.A. Lebensohn, S.R. Chen, C.M. Cady, G.T. Gray III and B. Mihaila: "Modeling mechanical response and texture evolution of alpha-uranium as a function of strain rate and temperature using polycrystal plasticity". International Journal of Plasticity 43, pp. 70-84 (2013). 70 citations in WoS, highly cited paper in ESI, top 2% in Scopus.

72. M. Knezevic, R.A. Lebensohn, O. Cazacu, B. Revil-Baudard, G. Proust, S. Vogel and M.E. Nixon: "Modeling bending of alpha-titanium with embedded polycrystal plasticity in implicit finite elements". Materials Science and Engineering A 564, pp. 116-126 (2013). 78 citations in WoS, top 2% in Scopus.

71. R.A. Lebensohn and O. Cazacu: "Effect of single-crystal plastic deformation mechanisms on the dilatational plastic response of porous polycrystals". International Journal of Solids and Structures 49, pp. 3838-3852 (2012).

70. J.P. Escobedo, E.K. Cerreta, C.P. Trujillo, D.T. Martinez, R.A. Lebensohn, V.A. Webster and G.T. Gray III: "Influence of texture and test velocity on the dynamic, high strain, tensile behavior of zirconium". Acta Materialia 60, pp. 4379-4392 (2012).

69. R.A. Lebensohn, M.I. Idiart and P. Ponte Castañeda: "Modeling microstructural effects in dilatational plasticity of polycrystalline materials". Procedia IUTAM 3, pp. 314-330 (2012).

68. R.A. Lebensohn, R.A. Holt, J.A. Caro, A. Alankar and C.N. Tomé: “Improved constitutive description of single crystal viscoplastic deformation by dislocation climb”. Comptes Rendus Mécanique 340, pp. 289-295 (2012).

67. A.K. Kanjarla, R.A. Lebensohn, L. Balogh and C.N. Tomé: “Study of internal lattice strain distribution in stainless steel using a full-field elasto-viscoplastic formulation based on fast Fourier transforms”. Acta Materialia 60, pp. 3094-3106 (2012). 50 citations in WoS.

66. R.A Lebensohn, A.K. Kanjarla and P. Eisenlohr: "An elasto-viscoplastic formulation based on fast Fourier transforms for the prediction of micromechanical fields in polycrystalline materials". International Journal of Plasticity 32-33, pp. 59-69 (2012). 144 citations in WoS, highly cited paper in ESI, top %2 in Scopus.

65. G. Lefebvre, C.W. Sinclair, R.A. Lebensohn and J.D. Mithieux: "Accounting for local interactions in the prediction of roping of ferritic stainless steel sheets". Modelling and Simulation in Materials Science and Engineering 20, 024008 (16pp) (2012).

64. M. Knezevic, L. Capolungo, C.N. Tomé, R.A. Lebensohn, D.J. Alexander and B. Mihaila, R.J. McCabe: "Anisotropic stress-strain response and microstructure evolution of textured alpha-uranium". Acta Materialia 60, pp. 702-715 (2012). 66 citations in WoS.

63. J. Segurado, R.A. Lebensohn, J. LLorca and C.N. Tomé: "Multiscale modeling of plasticity based on embedding the viscoplastic self-consistent formulation in implicit finite elements". International Journal of Plasticity 28, pp. 124-140 (2012). 106 citations in WoS, highly cited paper in ESI.

62. R. Deguen, P. Cardin, S. Merkel and R.A. Lebensohn: "Texturing in the Earth's inner core due to preferential growth in its equatorial belt". Physics of the Earth and Planetary Interiors 188, pp. 173-184 (2011).

61. M. Friak, T. Hickel, B. Grabowski, L. Lymperakis, A. Udyansky, A. Dick, D. Ma, F. Roters, L.-F. Zhu, A. Schlieter, U. Kuhn, Z. Ebrahimi, R.A. Lebensohn, D. Holec, J. Eckert, H. Emmerich, D. Raabe and J. Neugebauer: "Methodological challenges in combining quantum-mechanical and continuum approaches for materials science applications". European Physical Journal Plus 126, pp. 101-123 (2011).

60. J.P. Escobedo, D. Dennis-Koller, E.K. Cerreta, B.M. Patterson, C. Bronkhorst, B. Hansen, D. Tonks and R.A. Lebensohn: "Effects of grain size and boundary structure on the dynamic tensile response of copper". Journal of Applied Physics 110, 033513 (2011). 71 citations in WoS.

59. R.A. Lebensohn, M.I. Idiart, P. Ponte Castañeda and P.G. Vincent: "Dilatational viscoplasticity of polycrystalline solids with intergranular cavities". Philosophical Magazine 91, pp. 3038-3067 (2011).

58. M. Montagnat, J. Blackford, S. Piazolo, L. Arnaud and R.A. Lebensohn: “Measurement and full-field prediction of deformation heterogeneities in ice”. Earth and Planetary Science Letters 305, pp. 153-160 (2011).

57. S.B. Lee, R.A. Lebensohn and A.D. Rollett: "Modeling the viscoplastic micromechanical response of two-phase materials using fast Fourier transforms". International Journal of Plasticity 27, pp. 707-727 (2011). 42 citations in WoS.

56. R.A. Lebensohn, A.D. Rollett and P. Suquet: “Fast Fourier Transform-based modelling for the determination of micromechanical fields in polycrystals”. Journal of the Minerals, Metals and Materials Society (JOM) 63, pp. 13-18 (2011). 47 citations in WoS.

55. A. Griera, P. Bons, M.W. Jessell, R.A. Lebensohn, L. Evans and E. Gomez-Rivas: “Strain localization and porphyroclast rotation”. Geology 39, pp. 275-278 (2011).

54. B. Liu, D. Raabe, F. Roters, P. Eisenlohr and R.A. Lebensohn: “Comparison of Finite Element and fast Fourier full-field crystal plasticity solvers for texture prediction”. Modelling and Simulation in Materials Science and Engineering 18, 085005 (21pp) (2010). 41 citations in WoS.

53. O. Castelnau, P. Cordier, R.A. Lebensohn, S. Merkel and P. Raterron: “Microstructures and rheology of the Earth upper mantle inferred from a multiscale approach”. Comptes Rendus Physique 11, pp. 304-315 (2010).

52. A.D. Rollett, R.A. Lebensohn, M. Groeber, Y. Choi, J. Li and G.S. Rohrer: “Stress hot spots in viscoplastic deformation of polycrystals”. Modelling and Simulation in Materials Science and Engineering 18, 074005 (16pp) (2010).

51. M.E Nixon, R.A. Lebensohn, O. Cazacu and C. Liu: "Experimental and finite-element analysis of the anisotropic response of high-purity alpha-titanium in bending". Acta Materialia 58, pp. 5759-5767 (2010).

50. M.E Nixon, O. Cazacu and R.A. Lebensohn: "Anisotropic response of high-purity alpha-titanium. Experimental characterization and constitutive modelling". International Journal of Plasticity 26, pp. 516-532 (2010). 114 citations in WoS.

49. R.A. Lebensohn, C.S. Hartley, C.N. Tomé and O. Castelnau: "Modelling the mechanical response of polycrystals deforming by climb and glide". Philosophical Magazine 90, pp. 567-583 (2010).

48. A. Prakash and R.A. Lebensohn: "Simulation of micromechanical behavior of polycrystals: finite elements vs. fast Fourier transforms". Modelling and Simulation in Materials Science and Engineering 17, 064010 (16pp) (2009). 51 citations in WOS.

47. R. Brenner, R.A. Lebensohn and O. Castelnau: "Elastic anisotropy and yield surface estimates of polycrystals". International Journal of Solids and Structures 46, pp. 3018-3026 (2009). 45 citations in WoS.

46. R.A. Lebensohn, M. Montagnat, P. Mansuy, P. Duval, J. Meysonnier and A. Philip: "Modeling viscoplastic behavior and heterogenous intracrystalline deformation of columnar ice polycrystals". Acta Materialia, 57, pp. 1405-1415 (2009). 44 citations in WoS.

45. O. Castelnau, D.K. Blackman, R.A. Lebensohn and P. Ponte Castañeda: "Micromechanical modelling of the viscoplastic behavior of olivine". Journal of Geophysical Research B, 113, B09202 (2008). 43 citations in WoS.

44. R.A. Lebensohn R. Brenner, O. Castelnau and A.D. Rollett: "Orientation image-based micromechanical modelling of subgrain texture evolution in polycrystalline copper". Acta Materialia 56, pp. 3914-3926 (2008). 104 citations in WoS, top 2% in Scopus.

43. C. Deo, C.N. Tomé, R.A. Lebensohn and S. Maloy: "Modeling and simulation of irradiation hardening in structural ferritic steels for advanced nuclear reactors". Journal of Nuclear Materials, 377, pp.136-140 (2008).

42. R.A. Lebensohn, C.N. Tomé and P. Ponte Castañeda: "Self-consistent modeling of the mechanical behavior of viscoplastic polycrystals incorporating intragranular field fluctuations". Philosophical Magazine 87, pp. 4287-4322 (2007). 152 citations in WoS.

41. B. Plunkett, O. Cazacu, R.A. Lebensohn and F. Barlat: "Elastic-viscoplastic anisotropic modelling of textured metals and validation using the Taylor cylinder impact test". International Journal of Plasticity 23, pp.1001-1021 (2007). 40 citations in WoS.

40. R.A. Lebensohn, E.M. Bringa and A. Caro: "A viscoplastic micromechanical model for the yield strength of nanocrystalline materials". Acta Materialia 55, pp. 261-271 (2007).

39. B. Plunkett, R. A. Lebensohn, O. Cazacu and F. Barlat: "Evolving yield function of hexagonal materials taking into account texture development and anisotropic hardening". Acta Materialia 54, pp. 4159-4169 (2006). 87 citations in WoS.

38. O. Castelnau, R. Brenner and R.A. Lebensohn: "The effect of strain heterogeneity on the work-hardening of polycrystals predicted by mean-field approaches". Acta Materialia 54, pp. 2745-2756 (2006).

37. S. Nikolov, R.A. Lebensohn and D. Raabe: "Self consistent modeling of large plastic deformation, texture and morphology evolution in semi-crystalline polymers". Journal of the Mechanics and Physics of Solids 54, pp. 1350-1375 (2006).

36. R.A. Lebensohn, O. Castelnau, R. Brenner and P. Gilormini: "Study of the antiplane deformation of linear 2-D polycrystals with different microstructures". International Journal of Solids and Structures 42, pp. 5441-5459 (2005).

35. R.A. Lebensohn, Y. Liu and P. Ponte Castañeda: "On the accuracy of the self-consistent approximation for polycrystals: comparison with full-field numerical simulations". Acta Materialia 52, pp. 5347-5361 (2004). 85 citations in WoS.

34. R.A. Lebensohn, Y. Liu and P. Ponte Castañeda: "Macroscopic properties and field fluctuations in model power-law polycrystals: full-field solutions versus self-consistent estimates". Proceedings of the Royal Society of London A 460, pp. 1381-1405 (2004). 43 citations in WoS.

33. R.A. Lebensohn, C.N Tomé and P.J. Maudlin: "A selfconsistent formulation for the prediction of the anisotropic behavior of viscoplastic polycrystals with voids". Journal of the Mechanics and Physics of Solids 52, pp.249-278 (2004).

32. H. Francillette, A. Gavrus, R.A. Lebensohn: "A constitutive law for the mechanical behavior or Zr702a". Journal of Material Processing Technology 142, pp 43-51 (2003).

31. R.A. Lebensohn, P.R. Dawson, H.M. Kern and H.-R. Wenk: "Heterogeneous deformation and texture development in halite polycrystals: comparison of different modeling approaches and experimental data". Tectonophysics 370, pp. 287-311 (2003).

30. I.J. Beyerlein, R.A. Lebensohn and C.N. Tomé: "Modeling of texture and microstructural evolution in the equal channel angular process". Materials Science and Engineering A345, pp.122-138 (2003). 143 citations in WoS.

29. C.N. Tomé. R.A. Lebensohn and C.T Necker: "Orientation correlations and anisotropy of recrystallized aluminium". Metallurgical and Materials Transactions 33A, pp 2635-2648 (2002). 72 citations in WoS.

28. C.N. Tomé, P.J. Maudlin, R.A. Lebensohn and G.C. Kaschner: "Mechanical response of zirconium. Part I: Derivation of a polycrystal constitutive law        and finite element analysis". Acta Materialia 49, pp 3085-3096 (2001). 169 citations in WoS, top 2% in Scopus.

27. O. Castelnau, H. Francillette, B. Bacroix and R.A. Lebensohn: "Texture dependent plastic behavior of Zr-702 at large strain". Journal of Nuclear Materials 297, pp 14-26 (2001). 46 citations in WoS.

26. R.A. Lebensohn: "N-site modelling of a 3D viscoplastic polycrystal using Fast Fourier Transform". Acta Materialia 49, pp 2723-2737 (2001). 236 citations in WoS, top 2% in Scopus.

25. R.E. Logé, J.W. Signorelli, Y.B. Chastel, M.Y. Perrin and R.A. Lebensohn: "Sensitivity of alpha-Zircaloy-4 high temperature deformation textures to the beta-quenched precipitates structure and to recrystallization. Application to hot extrusion". Acta Materialia 48, pp 3917-3930 (2000).

24. D.A. Hughes, R.A. Lebensohn, H.-R. Wenk and A. Kumar: "Stacking fault energy and microstructure effect on torsion texture evolution". Proceedings of the Royal Society of London A 456, pp 921-954 (2000). 44 citations in WoS.

23. H.-R. Wenk, J.R. Baumgardner, R.A. Lebensohn and C.N. Tomé: "A convection model to explain anisotropy of the inner core". Journal of Geophysical Research B 105, pp 5663-5673 (2000).

22. J.W. Signorelli, R.E. Logé, Y.B. Chastel and R.A. Lebensohn: "Parameter identification method for a polycrystalline viscoplastic selfconsistent model based on analytical derivatives of the direct model equations". Modelling and Simulation in Materials Science and Engineering 8, pp 193-209 (2000).

21. T. Takeshita, H.-R. Wenk and R. Lebensohn: "Development of preferred orientation and microstructure in sheared quartzite: comparison of natural data and simulated results". Tectonophysics 312, pp. 133-155 (1999).

20. R. Lebensohn: "Modelling the role of local correlations in polycrystal plasticity using viscoplastic selfconsistent schemes". Modelling and Simulation in Materials Science and Engineering 7, pp 739-746 (1999).

19. R.A. Lebensohn and T. Leffers: "The rules for the lattice rotation accompanying slip as derived from a selfconsistent model". Textures and Microstructures 31, pp 217-230 (1999).

18. R.A. Lebensohn, P.A. Turner, J.W. Signorelli, G.R. Canova and C.N. Tomé: "Calculation of intergranular stresses based on a large strain viscoplastic selfconsistent polycyrstal model". Modelling and Simulation in Materials Science and Engineering 6, pp 447-465 (1998).

17. R. Lebensohn, H. Uhlenhut, C. Hartig and H. Mecking: Mechanical behavior g-TiAl-based polysinthetically twinned crystals: micromechanical modelling and experimental validation". Acta Materialia 46, pp. 4701-4709 (1998). 43 citations in WoS.

16. R.A. Lebensohn, H.-R. Wenk and C.N. Tomé: "Modelling deformation and recrystallization textures in calcite". Acta Materialia 46, pp 2683-2693 (1998). 48 citations in WoS.

15. R.E. Bolmaro, R.A. Lebensohn and H.-G. Brokmeier: "Crystal spin in 2-site selfconsistent models: from kinematics to kinetics". Computational Materials Science 9, pp 237-250 (1997).

14. R.A. Lebensohn, P.A. Turner and G.R. Canova: "Recent advances in modelling polycrystals with complex microstructures". Computational Materials Science 9, pp 229-236 (1997).

13. H. Francillette, B. Bacroix, M. Gasperini, O. Castelnau et R.A. Lebensohn: "Etude des mécanismes de déformation et des evolutions de textures du Zirconium 702-alpha déformé en compression plane à la température ambiante". La Revue de Métallurgie, Septembre, pp 1071-1079 (1997).

12. O. Castelnau, G.R. Canova, R.A. Lebensohn and P. Duval: "Modelling viscoplastic behavior of anisotropic polycrystalline ice with a selfconsistent  approach". Acta Materialia 45, pp 4828-4834 (1997). 41 citations in WoS.

11. R.A. Lebensohn and G.R. Canova: "A selfconsistent approach for modelling texture development of two-phase polycrystals: application to Titanium alloys". Acta Materialia 45, pp 3687-3694 (1997). 88 citations in WoS.

10. R.A. Lebensohn and C.N. Tomé: "Yield loci calculation of hcp materials using a self-consistent polycrystalline model". Textures and Microstructures 26-27, pp 513-529 (1996).

9. O. Castelnau, P. Duval, R.A. Lebensohn and G.R. Canova: "Viscoplastic modelling of texture development in polycrystalline ice with a self-consistent approach: comparison with bound estimates". Journal of Geophysical Research B 101, pp 13851-13868 (1996). 90 citations in WoS.

8. R.A. Lebensohn, M.I. González, C. Tomé and A.A. Pochettino: "Measurement and prediction of texture development during a rolling sequence of Zircaloy-4 tubes". Journal of Nuclear Materials 229, pp 57-64, (1996).

7. R. Lebensohn, D. Solas, G. Canova and Y. Brechet: "Modelling damage of Al-Zn-Mg alloys". Acta Materialia 44, pp 315-325, (1996).

6. R.A. Lebensohn and C.N. Tomé: "A self-consistent visco-plastic model: calculation of rolling textures of anisotropic materials". Material Science and Engineering A 175, pp 71-82 (1994). 174 citations in WoS.

5. R.A. Lebensohn, P.V. Sanchez and A.A. Pochettino: "Modelling texture development of zirconium alloys at high temperature". Scripta Metallurgica et Materialia 30, pp 481-486 (1994).

4. R.A. Lebensohn and C.N. Tomé: "A selfconsistent approach for the simulation of plastic deformation and texture development of polycrystals: application to Zirconium alloys". Acta Metallurgica et Materialia 41, pp 2611-2624, (1993). 1223 citations in WoS, top 1% in Scopus.

3. R.A. Lebensohn and C.N. Tomé: "A study of stress state associated with twinning nucleation and propagation in anisotropic materials". Philosophical Magazine A 67, pp 187-206 (1993). 70 citations in WoS.

2. C.N. Tomé, R.A. Lebensohn and U.F. Kocks: "A model for texture development dominated by deformation twinning: application to Zirconium alloys". Acta Metallurgica et Materialia 39, pp 2667-2680, (1991). 355 citations in WoS, top 1% in Scopus.

1.  R.A. Lebensohn and C.N. Tomé: "Modelling twinning in texture development codes". Textures and Microstructures 14-18, pp 959-964, (1991).

 

 
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